the answer to this question is 3/19
step-by-step explanation:
you didn't post any answer choices, so its not 100% clear what your teacher is looking for
however, log(15/7) is equivalent to log(15) - log(7)
i'm using the rule log(x/y) = log(x) - log(y)
the answer to your question is c.) volcanoes built the mountains and earthquakes tore them down.